Improvement in cooking-stoves



Gr. H. HESVS.

.l Cooking-Stove. Ne. 212,379. Patented Feb. 18', 1879.

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UNITED STATES FFICE.

IMPROVEMENT IN COOKING-STOVES.

Specification forming part of Letters Patent No. 212,379, dated February18,1879 application filed July 22, 1878.

.To all whom it may ooozcemf .Be it known that I, GEORGE H. Hess, ot theeityof Chicago and State of Illinois, have invented certain new anduseful Improvements in Cooking-Stoves, of which the following, takentogether with the accompanying drawescape-flue is located below the topof the re# pot, or in the lower part of the chamber, to draw orf thecooler portion of the smoke and hot air therein contained, leaving` thehotter portion to part with its'heat in cooking or heating beforepassing into the flue. Some of the devices herein described and claimedare, however, applicable to other stoves.

The objects and nature of my several irnprovements will appear in thefurther description herein given.

In the drawings, Figure l is a vertical median longitudinal section ot acooking-stove having a smoke-chamber and other features as above brieiiydescribed, showing the general relation of its parts, and a waterback-applied therein. Fig. 2 is a perspective view of asupporting-plate, by which the rire-pot is sustained and partly contned.Fig. 3 is a plan view of a fire-pot specially designed for burning woodin a stove of the description given; and Fig. 4 shows the wood-lire potin its relation to the sustaining-plate, (separately shown in Fig. 3.)

A is the bottom plate, B the middle plate, and C the top plate, of astove havin g a smokechamber, and, generally, of the character referredto above. In this stove, D is a warmingchamber, heated by severalcontiguous parts. E is the smoke-chamber, continuous with the space overthe re-pot F, and discharging through a flue, J leading from its lowerportion. l) is a cast plate, with its foot resting upon the plate B, andheld by the flan ge a. P has a vertical and a horizontal part, thelatter extending forward to the chamberwall and provided with andaperture, through which depends the tire-pot, sustained by the marginalflan ge a upon the latter. The plate P has also upon its horizontalportion a vertical marginal ange, P', which rises to the top plate @,andpreferably conformsto the shape of the chamber-walls, in this caserounded at the ends. This vertical flange serves to protect the innerwall, fw', from the heat from the tire-pot, and also to stiften the partof the plate P that immediately supports said lire-pot. A considerablespace surrounds the re-pot beneath the plate I), in which the air ismuch heated. Perforations b b are made in the tirepot near its top, forthe admission ot' this air above the burning fuel, with the effectsometimes of promoting more perfect combustion.

The grate being suspended wholly below the tire-pot, it may be laterallyvibrated to open a considerable space at either side thereof, and at thesame time the whole is of such size that when centrally placed it may betilted within the re-pot.

W, Fig. 1, represents, in transverse section, awater-back, consisting ofsinuous pipe located behind the plate P and across the smoke-chamber E.-It may, however, be of any desired form and located elsewhere in thesmoke-space below the level of the top of the fire-pot.

The effect of a water-back upon the interior temperature of anycook-stove to which it is applied is principally felt at the back lidswherever the water-back is placed.. In an ordinary cook-stove having ashallow iue, and consequently a rapid draft beneath the back lids, theeii'ect to lower the temperature is often very marked. On the otherhand, when applied in a stove having the deep smoke-reservoir, in whichthe velocity of the smoke and air current is slight, the e'ect ot' awater-back upon the temperature at the lids above the reservoir is notappreciable, but is felt almost wholly at `the bottom. The reason isobvious: The smoke and heated air that passes in vcontact with thewater-pipes and is cooled by them immediately takes its place at thebottom of the chamber, and that not thus cooled at the top. rlhe coolsmoke in the reservoir is cooler, and, perhaps, its volume is greater,by reason of the waterback; but the smoke at the lids is not less hotbecause of it.

It will be desirable to so place the waterback in the stove that thereneed be no intermingling or crossing of currents of hot and cooled smokeand air in their respective courses to the topandbottom ofthe reservoir.

In the cooking-stove illustrated all the external vertical Walls are ofsheet-iron. They are therefore very liable to be bruised and disgured.To afford them proper protection the Y middle plate, B, projectsslightly, and the top plate, G, projects considerably, (say three totive inches,) on all sides of the stove.

In a stove constructed on this principle the size of the stove proper,to accomplish a given result, is greatly less th an in one of ordinaryconstruction. The need for top space for cookingvessels, Ste., however,remains the same, wherefore the extended top plate, herein described asprotecting the sheet-iron walls, is useful, and is required toaccommodate the vessels that may be advantageously employed on thestove.

In Fig. 3 is shown a form of iire-pot adapted to hold Wood instead ofcoal. It is oblong in shape, and extends backward through and bevond thevertical portion of plate P, as seen in Fig. 4. This fire-pot, like thatfor coal, is supported from a marginal flan ge, a. It also has verticalian ges g on its outside, connected, preferably, by a transverse langeacross tlie bottom, which rest against the plate P in front,

and prevent movement of the fire-pot back-V ward.

Plates P, adapted, respectively, to wood and coal re pots, areinterchangeable in the same stove, being simply set in the foot-flangesa, and resting against the inner front wall of the stove. y

Having thus described my invention, what I claim, and desire to secureby Letters Patent, :is-

1. In a stove provided with an air-reservoir, E, the plate P, having thevertical and horizontal portions, as set forth, and an aperture for arire-pot, arranged to separate the chamber E from the lateral spaceabout the tire-pot, substantially as described.

2. The vertical Wall-protecting flan ge Pl on the margin of thehorizontal portion ot' plate P, extending on three sides of the repot,substantially as shown and described.

3. The combination, in the stove described, ot' the plate P and theflange n on the middle stove-plate, B, whereby the plate P, restingagainst the front wall, is supported in place, substantially as setforth.

,4. In combination with the walls of a stove, the plate P, having avertical and horizontal portion, to separate the hre-chamber from thesmokeehamber E, and the horizontal portion provided with au orice toreceive the rim of the iire-pot F, as set forth.

GEO. H. HESS.

Witnesses:

Jnssn' 00X, Jr., M. E. DAYTON.

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